Investigation of the formation of defects under fast neutrons and gamma irradiation in 3C?SiC nano powder

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F21%3A00354967" target="_blank" >RIV/68407700:21670/21:00354967 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.physb.2021.412842" target="_blank" >https://doi.org/10.1016/j.physb.2021.412842</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physb.2021.412842" target="_blank" >10.1016/j.physb.2021.412842</a>

Result language

angličtina

Original language name

Investigation of the formation of defects under fast neutrons and gamma irradiation in 3C?SiC nano powder

Original language description

In this work cubic phase, silicon carbide nano-powders were irradiated at the high-flux pulsed reactor IBR?2 (Dubna, Russia). The 3C?SiC powder was irradiated with neutron doses up to 1015 n/cm2. The irradiated samples were then analyzed using X-ray diffraction, Raman spectroscopy, Positron annihilation spectroscopy, and Fourier Transform Infrared Spectroscopy. The XRD analysis showed a slight decrease in the lattice parameters with the increase in neutron fluences. The results obtained from positron annihilation measurements were compared to the theoretical calculations, to recognizing the type of structural defect in the samples. A positron lifetime component 355 ps associated with the calculated values for clusters containing of 13?21 vacancies was identified. The concentration of these defects was estimated to be in the region of 5 ppm, and was very similar to the one identified on the unirradiated sample. The results also indicate high irradiation resistivity of the 3C?SiC after irradiation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PHYSICA B-CONDENSED MATTER

ISSN

0921-4526

e-ISSN

1873-2135

Volume of the periodical

611

Issue of the periodical within the volume

412842

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

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UT code for WoS article

000643642400005

EID of the result in the Scopus database

2-s2.0-85102570521